NILES, MI – The 2010 slayings of a Niles couple and the two-year investigation by police that led to an arrest in the case will be featured Sunday on the Investigation Discovery show, “On the Case with Paula Zahn.”

The show is scheduled for 10 p.m., according to a news release issued Wednesday by the cable channel.

John and Carolyn Tarwacki were killed in February 2010 at their home on Carberry Road, just outside of the Niles city limits. Prosecutors and Michigan State Police investigators said the couple were killed in a brutal attack that included beatings, multiple stabbings and gunshot wounds.

In October 2012, Keith James Lintz was arrested in connection with the double homicide following an investigation by state police, the Niles Police Department, the Cass County and Berrien County sheriff’s offices and the Michigan Attorney General’s office.

Lintz was convicted in September in Cass County Circuit Court of first-degree murder and sentenced to mandatory life in prison without the chance of parole.

Rex Hall Jr. is a public safety reporter for the Kalamazoo Gazette. You can reach him at rhall2@mlive.com. Follow him on Twitter.